DE60322760D1 - Method of calculating a quantity for an ultrasonic signal and its use for detecting valve faults in running motors - Google Patents

Method of calculating a quantity for an ultrasonic signal and its use for detecting valve faults in running motors

Info

Publication number
DE60322760D1
DE60322760D1 DE60322760T DE60322760T DE60322760D1 DE 60322760 D1 DE60322760 D1 DE 60322760D1 DE 60322760 T DE60322760 T DE 60322760T DE 60322760 T DE60322760 T DE 60322760T DE 60322760 D1 DE60322760 D1 DE 60322760D1
Authority
DE
Germany
Prior art keywords
samples
generate
calculating
group
ultrasonic signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE60322760T
Other languages
German (de)
Inventor
Polen Jerry Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Progress Rail Locomotive Inc
Original Assignee
Electro Motive Diesel Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electro Motive Diesel Inc filed Critical Electro Motive Diesel Inc
Application granted granted Critical
Publication of DE60322760D1 publication Critical patent/DE60322760D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/12—Testing internal-combustion engines by monitoring vibrations

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

A measurement technique that generates a number value identifying the width of a noisy pulse in an analog signal that has particular application for determining whether a defect exists in a cylinder valve of a locomotive diesel engine. The algorithm samples the analog signal, and then the samples are bunched into successive groups where each group includes a predetermined number of samples. A root mean square is taken of the samples in each group to generate a representative amplitude value for that group. Successive amplitude values are multiplied together to generate product values. The product values are averaged over a predetermined number of product values to generate the number value that can be analyzed to determine if a defect in a valve exists. <IMAGE>
DE60322760T 2002-02-15 2003-02-13 Method of calculating a quantity for an ultrasonic signal and its use for detecting valve faults in running motors Expired - Fee Related DE60322760D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35751602P 2002-02-15 2002-02-15
US10/360,376 US6859763B2 (en) 2002-02-15 2003-02-06 Technique for computing a measure on an ultrasonic signal having application to identify valve defects in operating engines

Publications (1)

Publication Number Publication Date
DE60322760D1 true DE60322760D1 (en) 2008-09-25

Family

ID=27669327

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60322760T Expired - Fee Related DE60322760D1 (en) 2002-02-15 2003-02-13 Method of calculating a quantity for an ultrasonic signal and its use for detecting valve faults in running motors

Country Status (5)

Country Link
US (1) US6859763B2 (en)
EP (1) EP1338898B1 (en)
AT (1) ATE404872T1 (en)
DE (1) DE60322760D1 (en)
MX (1) MXPA03001370A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027598A1 (en) * 2009-07-09 2011-01-13 Ge Sensing & Inspection Technologies Gmbh Improved non-destructive inspection of high-pressure lines
US8043048B2 (en) * 2010-04-08 2011-10-25 General Electric Company Systems and methods for monitoring a structural health of a wind turbine
US20160370255A1 (en) * 2015-06-16 2016-12-22 GM Global Technology Operations LLC System and method for detecting engine events with an acoustic sensor

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292841A (en) * 1979-07-11 1981-10-06 Creative Tool Company Compression rate analyzer
US4444049A (en) * 1980-12-22 1984-04-24 Froude Consine Limited Engine testing apparatus and methods
DE3207556C2 (en) 1982-03-03 1983-12-22 Vierling, Oskar, Prof. Dr.Phil.Habil., 8553 Ebermannstadt Arrangement for measuring the characteristic times of pulses and pulse series
AT389943B (en) 1987-03-23 1990-02-26 Avl Verbrennungskraft Messtech Method of testing the central engine mechanism, and equipment for carrying out the method
US5121443A (en) * 1989-04-25 1992-06-09 Spectra-Physics, Inc. Neural net system for analyzing chromatographic peaks
US5930136A (en) * 1990-06-04 1999-07-27 Hitachi, Ltd. Control device for controlling a controlled apparatus, and a control method therefor
US5377131A (en) * 1992-12-31 1994-12-27 International Business Machines Corporation Digital amplitude estimator
US5467185A (en) * 1994-07-15 1995-11-14 General Electric Company Emissions control for internal combustion engine
JP3834918B2 (en) * 1997-03-04 2006-10-18 いすゞ自動車株式会社 Engine fuel injection method and apparatus
US5930745A (en) 1997-04-09 1999-07-27 Fluke Corporation Front-end architecture for a measurement instrument
DE19755257A1 (en) 1997-12-12 1999-06-24 Daimler Chrysler Ag Method for detecting knocking combustion from an ion current signal in internal combustion engines
CA2339772A1 (en) * 1998-08-07 2000-02-17 3461513 Canada Inc. A vehicle presence detection system
WO2000009985A2 (en) * 1998-08-14 2000-02-24 Global Technovations, Inc. On-site analyzer
US6607136B1 (en) * 1998-09-16 2003-08-19 Beepcard Inc. Physical presence digital authentication system
US6278914B1 (en) * 1999-08-26 2001-08-21 Bombardier Inc. Adaptive signal conditioning device for train tilting control systems
AU2001239802A1 (en) * 2000-02-17 2001-08-27 General Electric Company System and process for detection of weak cylinders in a diesel engine

Also Published As

Publication number Publication date
EP1338898A3 (en) 2003-12-17
EP1338898A2 (en) 2003-08-27
US20030158712A1 (en) 2003-08-21
ATE404872T1 (en) 2008-08-15
US6859763B2 (en) 2005-02-22
MXPA03001370A (en) 2005-02-14
EP1338898B1 (en) 2008-08-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee